package operation;

import book.Book;
import book.BookList;

import java.util.Scanner;

public class DelOperation implements IOPeration{
    public void work(BookList bookList){
        System.out.println("删除图书...");
        System.out.println("请输入你要删除的图书: ");
        Scanner scanner = new Scanner(System.in);
        String name = scanner.nextLine();

        int index=-1;
        int currentSize = bookList.getUsedSize();
        int i =0;
        for (;i<currentSize;i++){
            Book book = bookList.getBook(i);
            if (book.getName().equals(name)){
                index = i;
                break;
            }
        }
        if (i>=currentSize){
            System.out.println("没有你要删除的书...");
            return;
        }
        for (int j=index;j<currentSize-1;j++){
            Book book = bookList.getBook(j+1);
            bookList.setBook(j,book);
        }
        bookList.setUsedSize(currentSize-1);
        System.out.println("删除书籍成功...");
    }
}
